I think, with the White Tower issue largely sorted out and intact, the only thing left to happen is for the Black Ajah or some of the Forsaken to forcibly attempt to capture Egwene and Aes Sedai leadership to turn them to the Dark One.

This attempt would fail because Gawyn will somehow rescue Egwene before it's too late and she will have another moment of butt-kickery. I'm actually thinking that Tarmon Gaidon will take place with Egwene and the WT as one of the battlefields in its' very halls and far away from Shayol Ghul.

Egwene may join Rand later in T'A'R to guide him in the healing of reality.